Borst-Jadassohn phenomenon

Borst-Jadassohn phenomenon

Any of a heterogeneous group of intraepithelial lesions—including irritated seborrheic keratosis, clonal seborrheic keratosis, eccrine poroma, malignant eccrine poroma, intraepithelial neoplasia (Bowen's disease) and others—which have expression of epidermal growth factor receptors in common.